NET (LOSS) INCOME PER COMMON UNIT Table - Net (Loss) Income per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
Sep. 30, 2018 |
Sep. 30, 2017 |
|
| Earnings Per Share [Abstract] | ||||
| Net income | $ 48,136 | $ 38,592 | $ 203,668 | $ 122,782 |
| Distributions to preferred limited partners | (29,881) | (12,153) | (62,116) | (26,916) |
| Distributions to general partner (including incentive distribution rights) | 0 | (13,214) | (1,141) | (41,683) |
| Distributions to common limited partners | (64,248) | (101,870) | (184,369) | (305,652) |
| Distribution equivalent rights to restricted units | (473) | (707) | (1,398) | (2,134) |
| Distributions in excess of earnings | (46,466) | (89,352) | (45,356) | (253,603) |
| Distributions to common limited partners | 64,248 | 101,870 | 184,369 | 305,652 |
| Allocation of distributions in excess of earnings | (46,466) | (87,565) | (45,378) | (248,531) |
| Series D Preferred Unit accretion (refer to Note 11) | (4,031) | 0 | (4,031) | 0 |
| Loss to common unitholders attributable to the Merger (refer to Note 2) | (377,079) | 0 | 377,079 | 0 |
| Net (loss) income attributable to common units: | $ (363,328) | $ 14,305 | $ (242,119) | $ 57,121 |
| Basic weighted-average common units outstanding | 104,264,796 | 93,031,320 | 96,920,202 | 87,392,597 |
| Basic net (loss) income per common unit | $ (3.49) | $ 0.15 | $ (2.50) | $ 0.65 |